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Natural Untreated Gemstones

Discover genuine untreated gemstones selected for natural beauty, rarity, and authenticity.

Natural Untreated Gemstones Weight
Natural Untreated Gemstones Size
Natural Untreated Gemstones Clarity
Natural Untreated Gemstones Price
Natural Untreated Gemstones Treatment

Size Explained

Choose Size or Size Range
For Example: 6-7
For Example: 8-9
Bi-color Natural Untreated Gemstones
Black Natural Untreated Gemstones
Blue Natural Untreated Gemstones
Brown Natural Untreated Gemstones
Golden Natural Untreated Gemstones
Gray Natural Untreated Gemstones
Green Natural Untreated Gemstones
Multicolor Natural Untreated Gemstones
Orange Natural Untreated Gemstones
Pink Natural Untreated Gemstones
Purple Natural Untreated Gemstones
Red Natural Untreated Gemstones
Turquoise Natural Untreated Gemstones
Violet Natural Untreated Gemstones
White Natural Untreated Gemstones
Yellow Natural Untreated Gemstones
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1.52ct Yellow Golden Beryl, Oval, VS

1.52ct Yellow Golden Beryl, Oval, VS

9 x 7 mm (calibrated)

$ 36.64

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2.12ctw Pink Morganite, Oval, VS

2.12ctw Pink Morganite, Oval, VS

8 x 6 mm (calibrated)

$ 92.91

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8.11ctw Pink Morganite, Round, Translucent

8.11ctw Pink Morganite, Round, Translucent

10 mm (calibrated)

$ 88.85

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4.80ct Pink Morganite, Oval, Transparent

4.80ct Pink Morganite, Oval, Transparent

14 x 10 mm (calibrated)

$ 19.92

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0.85ct Black Diamond, Round, Opaque
Diamond Product Video (668693)

0.85ct Black Diamond, Round, Opaque

5.5 mm (calibrated)

$ 677.28

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1.33ct Purple Spinel, Cushion, VS
Spinel Product Video (548658)

1.33ct Purple Spinel, Cushion, VS

6.3 x 6.1 mm

$ 99.35

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0.74ct Yellow Beryl, Oval, VVS-VS

0.74ct Yellow Beryl, Oval, VVS-VS

7 x 5 mm (calibrated)

$ 18.43

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0.79ct Purple Spinel, Cushion, VVS-VS

0.79ct Purple Spinel, Cushion, VVS-VS

6.1 x 4.8 mm

$ 28.24

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2.56ct Yellow Beryl, Oval, VS

2.56ct Yellow Beryl, Oval, VS

10 x 8 mm (calibrated)

$ 61.20

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3.11ct Pink Morganite, Round, Translucent

3.11ct Pink Morganite, Round, Translucent

9 mm (calibrated)

$ 33.73

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15.15ctw Black Spinel, Round, Opaque

15.15ctw Black Spinel, Round, Opaque

12 mm (calibrated)

$ 49.80

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1.05ct Yellow Beryl, Trillion, VVS

1.05ct Yellow Beryl, Trillion, VVS

8 x 8 mm (calibrated)

$ 20.92

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0.82ct Yellow Beryl, Oval, VVS

0.82ct Yellow Beryl, Oval, VVS

7 x 5 mm (calibrated)

$ 16.33

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2.80ct Pink Morganite, Round, Transparent

2.80ct Pink Morganite, Round, Transparent

9 mm (calibrated)

$ 30.37

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0.98ct Black Diamond, Square, Opaque
Diamond Product Video (677843)

0.98ct Black Diamond, Square, Opaque

5 x 5 mm (calibrated)

$ 558.27

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0.65ct Yellow Beryl, Trillion, VVS

0.65ct Yellow Beryl, Trillion, VVS

7 x 7 mm (calibrated)

$ 12.95

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4.63ctw White Topaz, Cushion, VS

4.63ctw White Topaz, Cushion, VS

4.6 x 4.5 mm

$ 25.36

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1.20ct Brown Rutile Topaz, Pear Shape, Transparent

1.20ct Brown Rutile Topaz, Pear Shape, Transparent

8.8 x 5.7 mm

$ 24.90

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0.72ct Pink Morganite, Oval, VS

0.72ct Pink Morganite, Oval, VS

7.8 x 5.4 mm

$ 55.22

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0.78ct Gray Cat'S Eye Alexandrite, Oval, Opaque

0.78ct Gray Cat'S Eye Alexandrite, Oval, Opaque

5.7 x 3.9 mm

$ 161.85

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1.28ct Yellow Beryl, Trillion, VVS-VS

1.28ct Yellow Beryl, Trillion, VVS-VS

8 x 8 mm (calibrated)

$ 30.59

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3.68ct White Topaz, Round, VVS-VS

3.68ct White Topaz, Round, VVS-VS

9.5 mm (calibrated)

$ 32.38

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0.68ct Purple Spinel, Pear Shape, VS

0.68ct Purple Spinel, Pear Shape, VS

6 x 5.5 mm

$ 34.17

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2.82ct Pink Morganite, Round, Transparent

2.82ct Pink Morganite, Round, Transparent

9 mm (calibrated)

$ 30.59

View Gem
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Why Buy Natural Untreated Gemstones from GemSelect?

Why Choose Untreated Gemstones?

Untreated gemstones are valued for their natural color and clarity without artificial enhancement. Many buyers prefer these gems for authenticity, rarity, and long-term value.

Natural Loose Untreated Gems Online

Shop loose untreated gemstones online at GemSelect with confidence. Browse sapphires, rubies, spinels, aquamarine, garnet, tourmaline, and more with full disclosure.

Natural Untreated Gemstones for Jewelry and Collecting

Untreated Gemstones for Jewelry

Natural untreated gems are excellent for rings, earrings, pendants, and custom jewelry. Their original beauty makes every piece unique and meaningful.

Popular Untreated Gemstone Types

Popular choices include untreated sapphire, ruby, spinel, garnet, tourmaline, zircon, aquamarine, and many collector stones in a wide range of colors.

Certified Natural Gemstones

Many buyers choose untreated gemstones with gemological reports for added confidence. Certification can confirm identity and indicate whether treatments are present.

Collector Quality Untreated Gems

Collectors appreciate untreated gemstones because naturally fine examples are rarer than treated material. These stones can be especially desirable when color and clarity are strong.

Calibrated Untreated Gemstones

We also offer calibrated untreated gemstones in popular sizes suitable for standard jewelry settings, making custom designs easier and faster.

Worldwide Shipping from GemSelect

GemSelect offers secure online ordering, detailed product images, and worldwide delivery so you can shop untreated gemstones from anywhere.

Learn more about gemstone treatments, identification, and care on our Gemstone Information Pages.

FAQs

What does untreated gemstone mean?

An untreated gemstone has not undergone enhancement processes such as heating, dyeing, filling, coating, or diffusion to improve appearance.

Are untreated gemstones more valuable?

Often yes, especially in sapphire, ruby, and other premium gems where fine untreated stones are rarer than treated examples.

How can I verify a gemstone is untreated?

Independent laboratory certification is the best way to verify whether a gemstone is natural and untreated.

Which gemstones are commonly sold untreated?

Spinel, garnet, zircon, tourmaline, aquamarine, and some sapphires or rubies are often available untreated depending on source and quality.

Are all untreated gemstones natural?

Natural untreated gemstones are mined stones that have not been enhanced after cutting. Always buy from trusted sellers with clear disclosure.

GemSelect Certified Store Reviews

GemSelect: Over 22 Years in the Gemstone Business! Thank you for trusting us with your purchase!

Overall Rating -> 10 star ratings

Very good.

Posted By Tommy in December, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Took a chance on purchasing my gemstones from Gemselect and was impressed. 10/10

Posted By KT in September, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

Very good and simple exchange

Posted By Waylon in March, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Good. I ts very user friendly.

Posted By Shalini in June, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I needed a very specific color of tourmaline and Gem Select had it. I had to get the client to agree and then ordered the stone. It arrived better than pictured and we all were very happy.

Posted By Tim W in February, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Have made 2 purchases so far from GemSelect and they have been amazing! Anytime I requested additional info, videos or pictures of a particular item, the response was always timely and helpful. This is a great place to buy, if you are looking for loose stones. Highly recommend!

Posted By Britnee Rose in September, 2025
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
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